Stewart Wingate, chief executive of London Gatwick, welcomed the news as "one of the most exciting route developments" since the airport’s change of ownership four years ago.
Introductory one-way fares are £149 to New York (JFK), £179 to Fort Lauderdale (£179) and £199 to Los Angeles (LAX). The airline will fly twice a week to LA and Fort Lauderdale, and operate three flights a week to the Big Apple.
Bjørn Kjos, Norwegian’s chief executive, said: "There’s great demand for high quality flights at a low fare between the UK and the US, particularly to and from London Gatwick, where no other airline currently offers these routes... Launching long-haul routes between London Gatwick and the United States is also an important part of our strategy to expand internationally and get a stronger foothold in markets outside Scandinavia."
Norwegian is also launching five new European routes from Gatwick next spring and summer - Santorini, Corfu, Sicily (Catania), Cyprus and Budapest - and increasing flight frequencies on existing routes to Malaga, Ibiza, Split, Dubrovnik, Majorca, Faro, Tenerife, Copenhagen and Barcelona.